<script>
var
  versions = ['The browser support:'];
for (var str='',i=10; i<=30; i+=1) {
  var v = i.toString().split('').join('.');
  str += [
    '<script ',
/*
    'type="text/javascript',
    v,
    '" ',
*/
    'language="JavaScript',
    v,
    '"',
    '>versions[versions.length] = ',
    v,
    ';<',
    '/script>\n\r'].join('');
}
str += '<script>document.writeln(versions.join("<br>"));<' + '/script>';
//alert(str);
document.writeln(str);
</script>